Derrick



Feb. 7, 1928;

J. P. NEILSON, ,sR

DERRICK Filed Dec. 11. 1926 2 Sheets-Sheet l INVENTQR (fa/mas FAQ/$0 51:

A TTORNE Y Feb. 7, 1928.

J. P. NEILSON, SR

ERRIGK' Filed Dec. 11, 1926 2 Sheets-Sheet 2 INVENTOR JZW765 P/Va/sozrfik ATTORNEY i able for drilling would be uneconormcal and fling of legs and relegs separately and upon Patented 'J, i

.tIiTlATES PATENT OFFICE.

JAMES NEILSON, SR, OF TULSA, OKLAHOMA.

DERRICK;

Application filed December 11. 1926. Serial No. 154,1 ie.

My invention relates to clamp brackets installation, but are met by my invention. and more particularly to such braclre's as Twisting of the structure under various may be applied to the legs oil a skeleton strains, and the additional wind pressure structure, tor eXan1 :)le,an oil well derrick, as due to additional suriiace presented by the an important feature of the means whereby relegs, are further conditions which are met the structure is stabilized. by my invention. y

In the following; description, oil well der- In the method or reentorcing on which riclzs ot tubular i Lon will typii y the present invention is based, the legs and structures that are designed and erected relegs are attached to each other by means l primarily for comparatively light service of a clamp, the term and pressure of the but that may be converted or adapted to halves of the clamp eilecting the adequate service under which they must sustain permanency of attachment since the chief heavier and ditierent strains. The descripfunction of the clamp is to hold the legs and tion reters sieciiically to reenttorced strucrelegs together. Should any force be exiii ures, my invention being especially adapted Cr ed 01 Substantial time upon Or against to the stabilization of such reen'torced StlUC- such clamp in any direction except pertnreg pendicularly to the line of parallel of the The term standard herein'used refers eggs and relc such force would tend to to the element comprising aderrick leg and disturb the effectiveness of the clamping; its reentorcing roles: attached to said leg; by tunction. My invent onprrvides means tor clamps. The top for the derrick is to be insur ng; the permanency oi? the clamp in understood as referring to the plate on position and t'or strengthening the clamp which the crown bloclr rests. against such said persistent force, as for An oil well derrick is usually designed example, when the clamp isadapted for use for the comparatively lightduty ot pumpas a bracket and as such is subjected to other inc; oil over av long period; a nnnunum than relatively horizontal strains. amount oi metal is used in it so that invest- One other condition created by the relcg ments, wear and tear loss and wind strain in installation and for which my invention are minimized. A derrick designed as suitprovides the remedy, is the wiggling or shutinappropriate {or permanent use in pumpeach other, resulting in loosening of connecing. in practice, derriclrs are erected that trons, wearing; down of parts, and endangermay remain in permanent use for pumping: mg; of the structure. and these are reentorced, strengthened and The object of my invention is to provide no braced in various ways to meet the heavier means for preventing twisting, swaying an stresses oi? various kinds oit' drilling operavibrating of a pumping derrick or similar tions or other duties. structure, and erratic movement of its mem- One phase of reeniorceinent of a pumping, hers, especially when such structure is subderriclr to give it strength to sustain the jected to unusual strain and specifically o5 strain oi: drilling, of pulling casing, and when the structure is a pumping derrick and similar worx, is -the installation of relee's is reentorced with relegs, equipped with which are additional and usually larger den drilling; and casing pulling; devices for ricl; legs attached, tor example by clamps, heavier duties, such means being readily reto the 16,918 he S ru ur Si r f movable, such removal being desirable when torcement provides three among several adthe occasion for its use has passed. vantages; (1; additional resistance against More specifically the invention comprises the .9 r i l i life to the h avi an improvement in a clamp by the addition pull of drilling, casing pulling and like to it of a bracket element, by addition of duties as contrasted with oil pumping; (2) means torattaching the clamp to the standso some additional rigidity as preventive of ards "for obtaining desirableadditional'ri buckling, swaying, vibrating due to various gidity for the functioning of the clamp deand changing strains of the load, and (3) vice as a clamp bracket, and the combinast'rength to meet the conditions 0t work on time of the clamp bracket with other ele the derrick involved in installation of parts ments for providing additional strength to so and equipment, and repairs. Conditions 2 an oil well derrick; the clamp bracket being and 3 are not fully provided for in the releg adapted tor attachment to s er-io s of the through one corner the line 3-3 of legs and .relegs of the derrick and thereby providing a means whereby relatively vcrtieal sections throughoutthe height of the derrick may be connected by adjustable tie rods, thereby alfording discontinuous but complete connection between the top ofthe derrick and the base upon which the legs and relegs are mounted. Downward stress exerted on the derrick by the adjustable tie rods will tend to prevent such excessive twisting, swaying and vibrating of the derrick as is common to light derricks and to .reen't'orccd derricks' The plurality of tie rods each with its turnbuckle connecting adjacent sections of the legs, provides a larger stress and less hazard sum total of downward than would be econon'iically feasible in single and continuous connecting elements such as wires or rods. The form of the improved clamp brackets makes it possible to provide tension also at any location on the derrick in horizontal or angular directions for the braciug of the entire structure or any part of it to meet the normal or special conditions.

In the following description and the accoinpanying drawings, the improved details of structure are shown in the preferred form as applied to clamp brackets used in attaching relegs to the legs of a derrick as elements in means for stabilizing the structure.

In the drawings:

Fig. 1 is a side elevational view of a derrick showing the device as applied to the legs of a derrick.

Fig. 2 is a horizontal sectional view of a derrick frame, taken on the line 2-2 of, ig. 1.

Fig. 3 is a similar sectional view taken on Fig. l is a detail perspective view of portions of one of the corner legs of the derrick illustrating the tie rod connection tothe leg base and crown block.

Fig. 5 is a. detail plan view of a partot the top of the derrick showing a tension rod connection.

Fig. 6 is a detail perspective view of the clamp brackets.

Referring in detail to the drawings:

'1 designates the lower base section of van oil well derrick, the upper section, 22 the top ol. the derrick, and 3 one of several intermediate sections. At the lower end of each of the four feet of one of the lower section 1 is a socket member l in which are mounted legs 5 and parallel reinforcing legs 6, each consisting in the examples illustrated, of sec tions of tubing. The sections of legs 5 are joined together by suitable means such as the leg joints 7 and the sections of a reinforcing leg 6 are joined by means of a clamp 8. Legs 5 and 6 mountedin the socket 4 fixed on a. base mounting plate Sextend upwardly to form rigid principal members or standards of the derrick structure. 1

sections with the upper ends Gil-ts 11 are secured to the leg joints 7 serving to hold the legs in spaced relation and at their proper inclined angles. Sway braces 12 are likewise secured to the leg joints 7 and connect the lower ends of leg of sections of legs of other standards and thus contribute to strength and stability.

The clamp brackets 8 as legs 5 and 6 of a derrick consist o'l mated halves 13, eaclrhaving a semi-circular leg grip 1 lt'or engagement with a derrick leg 5 and a like grip 15 for engagement with a recnforcing leg (3. In order that the clamp 8 may be secured to the derrick leg, apertures 16 are provided in grips l4 and 15 and are adapted to receive the bolts 17 and 18. The bolts 17 and 13 also pass through circular openings 19 in the legs 5 and through similar openings 1!) in the releg sections 6; and the nuts 20 are provided thereon so that: pressure may be exerted on the clamp in its contact with the legs. Thus the halvesol the clamp are connected with each other and are attached to the legs and the relegs of the derrick standardby the bolts 1"? and 18 that pass through clamps and'legs; and this attachment is made firm and the legs of the standard are integrated by the pressure ol the clamp halves against the legs obtained by means of the nuts 20. p

Further provision for securing the clamps to the legs is made by providing the bolts 2! which are inserted through the openings "3). in the bracket portion ot' the clamp, and the nuts 2st on said bolts 21 by which pressure is applied to the clamps.

To stillen the derrick and l'll'll'll anchor the crown block to its upper end I tie the crown block to the derrick base by turnbuckle rods and 'to prevent sway of the rods 1 divide the same into sections and connect: the sections through clamp brackets at ditfercnt heights in the "derrick. For this purpose l provide the outer ends of some of the clamp brackets with thuvuwardlr directed hooks 25 and upwardly directed hooks Elli, the

applied to the points 27 ot' the oppositely directed hooks being spaced to receive eyes on the ends of. the rod sections 29. The e hooked bracket clamps are spaced throughout the height of the derrick according to the length of the tie rods, and intermediate clamps are provided with red guides formed by spreading the bracket portion 2 3 to provide the outwardlr opening sockets 30. j j

I prefer tolocate hook clamps on the legs immediately beneath the lower cross beam 31 and tie these clamps to the base by rods 29, the eyes of which are attached to the clamp hooks and to books 33 anchored to the base. The clamps just mentioned are tied to similar clamps located slightly above the cross beam andthe last named clamps are tied to other clampshigher up the derrick,the tie rods till a derrick base and connecting the clamps having greater spacing being seated in the anchoring sockets of intermediate clamps. The upper hook clamps are preferably located adjacent the crown block and tied thereto by short or stub rods.

To further stiti'en the base of the derrick I prefer to locate a hook clamp on the legs between the cross beam 31 and the derrick base and to tie this clamp to the cross beam by diagonal tie rods. All of the tie rods, including the diagonals, but not necessarily the short or stub rods, are provided with turnbuckles for adjusting their tension.

It is apparent, therefore, that with the improvements above described, I not only pro vide for securely connecting the relegs with the main legs, but I further utilize such connections :tor anchoring the crown block to the for stitl'cning the entire structure.

What I claim and desire to secure by Letters Patent is:

1. In a derrick structure comprising legs and relegs, clamps for securing the relegs to the legs and tensioning means connecting the clamps.

2. In a derrick structure comprising legs and relegs, clamps for securing the relegs to the legs, rods connecting the clamps and means for adjusting said rods.

3. In a derrick structure comprising legs and relegs, clamps for securing the relegs to the legs, hooks on said clamps, rods applied to said hooks to connect the clamps and means for adjusting said rods.

4. In aderrick structure comprising clamps tor securing the relegs to the legs, oppositely disposed bracket arms on said clamps, books on said bracket arms, rods connecting the clamps through said hooks, and means for adjusting said rods.

5. In combination with the legs and relegs of a derrick structure, ing mated halves, said clamps having tor gripping the legs and the relegs ot the derrick, bracket arms integral with said clamp, means for securing the mated halves together and to said legs and relegs, oppo sitely directed hooks on said bracket arms,

the hooks 0t successive clamps, and means for tensioning the rods. 6. In combination with the legs and relegs ot a derrick structure comprising mated halves, said clamps tie rods connecting having means for gripping the legs and the relegs of the derrick. bracket arms integral with said clamps and comprising extensions thereof, means for seclamps comprismeans curing the mated halves together and to said legs and relegs, oppositely directed hooks on said bracket arms, the points of said hooks being spaced, bolts extending through said bracket arms and securing said arms together, tie rods applied to the hooks of said clamps, and means for tensioning the rods.

7. In a derrick structure comprising base standards, girts and sway braces connecting the standards, relegs extending along the standards, clamps attaching the relegs to the standards and having bracket arms provided *ith hooks, the rods having eyes engaging said hooks, eye bolts fixed in the base and the crown of the derrick for engagement of the tie rods, turnbuckles tensioning the tie rods and said tie rods thus engaged and tcnsioned providing multiple elements for equal downward stresses tor stabilizing the structure.

8. In a derrick, a base and a crown block, legs and relegs supporting the crown block from the base, clamps connecting the legs and relegs, and rods co-operating with the clamps to tie the crown block to the base.

9. In a derrick, a base and a crown block, legs and relegs supporting the crown block from the base, clamps on the legs and relegs, rods co-ope rating with the clamps to tie the crown block to the base, and means in the rods for adjusting the tying connection.

10. In a derrick structure comprising legs and relegs, clamps connecting the legs and relegs, some of the clamps having end hooks and other of the clamps having rod sockets, and rods connected with the hooked clamps and seated in the sockets ot the socketed clamps.

11. In a derrick structure comprising legs and relegs, clamps connecting the legs and relegs, some of the clamps having end hooks and other of the clamps having rod sockets, and rods connected with the hooked clamps and seated in the sockets of the socket-ed clamps, the rods being provided with turnbuckles for adjusting their tension.

12. In a derrick comprising a base, legs and relegs supported on the base, a crown block supported on the legs and relegs, clamps connecting the legs and relegs, tie rods connecting intermediate clamps with each other and other tie rods connecting upper and lower clamps with the crown block and base.

In testimony JAMES P. NEILSON, SR.

whereof I aflix my signature.

If U 

